NC Tail Number character sizes

  EAA site refers to 16” wide 24” high spaced 4” separation The 1st “N” top of the left wing starts 16” from the fuselage. I am going to measure it out to see what it would look like using that data. Note, even with large wing numbers, back then the smaller number was on the rear of the fuselage or vertical tail. Ref part 45.22 Exhibition, antique, and other aircraft: Special rules. PS If you’re aircraft was built prior to 1949, the NC wing and small tail or fuselage registration numbers were required. 

Refer to 14 CFR part 45.29.

Depends on where they were, my plane had them on the wing and tail,

Good morning all, question regarding original "NC" markings, What size should the individual characters be and what is the spacing for the ones on the wings?

When I measured I found that approximately 20." x 13.25" with 3.25" spacing would fit in with what I have guesstimated from photos.